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Volodymyr Osnadchuk

@volodymyrosnadchuk

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Senior Frontend Developer at Finsight who built CreditFlow analytics for 150+ institutional clients.

Ukraine

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At Finsight, I built real-time data tables and analytical features for CreditFlow, a financial analytics platform for US Debt Capital Markets used by 150+ institutional clients.

I worked on the Bond Screener, League Tables, Portfolio Monitor, New Issue Volume charts, and interactive dashboards. I also led migrations from JavaScript to TypeScript, Redux Form to Final Form, and Redux to React Context.

I created Playwright end-to-end and Jest/Vitest unit tests in GitHub Actions CI, and owned features from specification through production. I presented sprint deliverables to business stakeholders and monitored errors in Sentry.

Earlier, I developed features for Favbet at Betinvest, built React applications for Vigilo at Softwarium, and developed web and mobile applications at OldminTeam. My work has also included responsive corporate platforms and third-party REST API integrations at JBS Ukraine.

Experience

Work history, roles, and key accomplishments

Senior Frontend Developer

Finsight

Feb 2022 - Jul 2026 (4 years 5 months)

Built real-time data tables with SSR and WebSocket subscriptions for a financial data and analytics platform. Led platform-wide migrations and implemented key analytical features for the CreditFlow platform.

TypeScript React WebSockets SSR Playwright Jest Vitest GitHub Actions Redux Final Forms ReactContext Sentry SAFe Agile

Frontend Developer

Betinvest

Feb 2020 - Feb 2022 (2 years)

Developed new features and maintained core React applications for Favbet, a high-traffic sports betting platform. Implemented state-driven components, custom React Hooks, and design system libraries.

React React Hooks React Hook Form Design Systems State Management

Frontend Developer

Softwarium

Apr 2019 - Feb 2020 (10 months)

Built interactive React applications for childcare and school facility management (Vigilo). Used Redux, Formik, and React-intl for localization.

React Redux Formik React Intl

Junior Frontend Developer

OldminTeam

May 2018 - Apr 2019 (11 months)

Developed cross-platform web and mobile applications with Angular 2+, React.js, and React Native.

Angular React React Native

Junior Frontend Developer

JBS Ukraine

May 2016 - May 2018 (2 years)

Developed responsive layouts and corporate web platforms; integrated third-party REST APIs.

Responsive Design HTML CSS JavaScript REST APIs

Education

Degrees, certifications, and relevant coursework

Master.dev

React Performance, v2, React Performance

Completed React Performance, v2 certification in January 2026.

Master.dev

Next.js Fundamentals, v4, Next.js

Completed Next.js Fundamentals, v4 certification in September 2026.

National University of Food Technologies

Specialist's Degree, Management of Organizations and Administration

2011 - 2012

Specialist's Degree in Management of Organizations and Administration from the National University of Food Technologies, Kyiv, Ukraine, from 2011 to 2012.